Color

#23c5fb

#23c5fb
hex#23c5fb
rgbrgb(35, 197, 251)
hslhsl(195, 96%, 56%)
oklchoklch(0.77 0.143 227.6)
Closest name: deepskyblue (#00bfff)Relative luminance 0.4725

Colors that go with #23c5fb

Charcoal, Dodger Blue and Midnight Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#fb5923

#23fbc5 · #2359fb

#fb23c5 · #c5fb23

Split-complementary

Open in tool →

#fb2359 · #fbc523

#c523fb · #fb5923 · #59fb23

Contrast

#23c5fb as textRatioAAAA largeAAAFix
Aaon white
2.01:1failfailfail
  • AA: use #037da5 as the text (4.69:1)
  • AAA: use #035e7d as the text (7.24:1)
  • AA: or shift the background to #474747 (4.62:1)
  • AAA: or shift the background to #2b2b2b (7.05:1)
Aaon black
10.45:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #23c5fb as the background.

Brands using this color

Fonts for this mood

#23c5fb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #23c5fb
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #23c5fb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/23c5fb-9cb5c4-df4e70-1f242d-e9f1ef?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md